Why is a control important in an experiment?

Sugar solution does not change the colour of green universal indicator what does this tell you about sugar solution

A 58.0 kg snow skier is on the top of 351 m high hill. After she has gone down a vertical distance of 142 m, what is her mechanical energy? Explain your answer (CER) !

What did Galileo discover when he dropped 2 cannon balls of different weights from the leaning tower of pisa

Common effects of cocaine include

The atoms that make up a star can be determined by A. the color B. the position of the star in its galaxy C. the stars emission spectrum D. The star corona

A 1200 kg car moving at 7.8 m/s collides with a stationary car of mass 1500 kg. if the two vehicles lock together, what is their combined velocity immediately after the collision?

Which have more kinetic energy a 100g ball, a 200g ball, or a 500g ball explain

An internal combustion engine uses fuel, of energy content 44.4 MJ/kg, at a rate of 5 kg/h. If the efficiency is 28%, determine the power output and the rate of heat rejection.

Fleas often live on dogs or cats and bite them for meal of blood. This can be harmful to the cat or dog that is bitten. What type of symbiotic relationship is that?

Who was the scientist that discovered Pluto wasnt a planet